Write the full unabbreviated electrons configuration of the following elements

Explanation:

Sodium:

Na₁₁ = 1s² 2s² 2p⁶ 3s¹

Iron:

Fe₂₆= 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶

Bromine:

Br₃₅ = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁵

Barium:

Ba₅₆ = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s²

Cobalt:

Co₂₇ = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁷

Silver:

Ag₄₇ = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s¹ 4d¹⁰

Tellurium:

Te₅₂= 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁴

Radium:

Ra₈₈ = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s²

consider the reaction below.

 no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

24

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock